View Single Post
Old 25-05-2018, 02:05 PM   #39
st jimmy
Senior Member
st jimmy's Avatar
Join Date: May 2016
Location: Amsterdam, Netherlands
Posts: 2,095
Likes: 1,399 (834 Posts)

Originally Posted by truegroup View Post

"Although the more energetic X-rays, photons with an energy greater than 30 keV (4,800 aJ) can penetrate the air at least for distances of a few meters (they would never have been detected and medical X-ray machines would not work if this was not the case) the Earth's atmosphere is thick enough that virtually none are able to penetrate from outer space all the way to the Earth's surface. X-rays in the 0.5 to 5 keV (80 to 800 aJ) range, where most celestial sources give off the bulk of their energy, can be stopped by a few sheets of paper; ninety percent of the photons in a beam of 3 keV (480 aJ) X-rays are absorbed by traveling through just 10 cm of air."
That’s a nice trick you perform, whenever you’re caught talking out your a$$; you (try to) cover this up with (more) lies and blatant insults.
Nowhere in your link does it say that ALL of the X-rays are "in the 0.5 to 5 keV (80 to 800 aJ) range", that "can be stopped by a few sheets of paper".
No on the contrary: it talks about "most celestial sources give off the bulk of their energy"; in other words there are also X-rays coming from the sun with a higher energy (lower wavelength) that can't be stopped by your "sheets of paper"...

The following quote from "your" link explains the difference in "soft" X-rays and "hard" X-rays (gamma rays):
"X-rays span 3 decades in wavelength, frequency and energy. From 10 to 0.1 nanometers (nm) (about 0.12 to 12 keV) they are classified as soft x-rays, and from 0.1 nm to 0.01 nm (about 12 to 120 keV) as hard X-rays."[2]

The following page from the "independent" Wikipedia shows that the CORONAS-F recorded X-rays/gamma rays in the 60-100 keV range (so higher than 5 keV)...
Solar flares usually follow the solar cycle. CORONAS-F was launched on July 31, 2001 to coincide with the 23rd solar cycle maximum. The solar flare of October 29, 2003 apparently showed a significant degree of linear polarization (> 70% in channels E2 = 40-60 keV and E3 = 60-100 keV, but only about 50% in E1 = 20-40 keV) in hard X-rays,[16] but other observations have generally only set upper limits.

Maybe you can use your sheets of paper to dry your eyes...
Do NOT ever read my posts.
Google and Yahoo wouldn’t block them without a very good reason:

Last edited by st jimmy; 25-05-2018 at 02:11 PM.
Likes: (2)
st jimmy is offline   Reply With Quote